a-1 |
a+2 |
1 |
a-2 |
a2-8a+16 |
a2-4 |
(a-1)(a-2)-(a+2) |
(a+2)(a-2) |
(a-4)2 |
(a+2)(a-2) |
a(a-4) |
(a+2)(a-2) |
(a+2)(a-2) |
(a-4)2 |
a |
a-4 |
-3 |
-3-4 |
3 |
7 |
y+1 |
2x |
1 |
x+y |
x+y |
2x |
2 |
2 |
1 |
3 |
x2 |
x-1 |
2x |
x-1 |
x |
x-1 |
x4+2x2-1 |
x5 |
x-1 |
x+2 |
x2-4 |
x2-2x+1 |
1 |
x2-1 |
a2-4 |
a2-4a+4 |
5 |
a-2 |
2 |
a2-2a |
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